摘要:
Tree Cutting After Farmer John realized that Bessie had installed a "tree-shaped" network among his N (1 <= N <= 10,000) barns at an incredible cost, 阅读全文
摘要:
D. Make The Fence Great Again time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You have a 阅读全文